Is it possible to remove all instances of the default media player and keep xPlayer support? The default player does not support bluetooth playback on standard headsets for me, yet xPlayer does. So, I was wondering if it was possible to remove all the *.cod in the java folder the typical way to make more room, yet keep support for xPlayer.

There probably is a way to delete it, but it most likely is not reccommended. The best thing to do probably would be to hide the default media player by hovering over it, hitting the menu button, and scrolling down to hide. I don't know if that is the kind of answer you were looking for, but I have no experience with xplayer. I hope that helps!